Specification:
1. Wireless technology: 2.4GHz.
2. Wireless distance: 10m.
3. Rated voltage / current: 1.5V / 20mA.
4. Power: 1 x AA battery (not included).
5. Number of keys: 3.
6. Optical resolution: 1600 DPI.
7. Working mode: Photoelectric.
8. Button click life: 5 million times.
9. Material: ABS.
10. Product weight: 47g.
11. Product size: 9.8×5.6×3.4cm.
12. System Requirements: Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 / 10 / Vista Mac OS or the latest version.